Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1990 Geo MetroCoolant Type & Capacity
OEM spec from the factory service manual for the Base, 2D Hatchback, Automatic variant.
Quick Answer
Coolant Type
50/50 mixture of Ethylene Glycol Base Antifreeze and water
Capacity
4.10 QTS.
3.88 L
Variant
Base, 2D Hatchback, Automatic
Note: GM Specification 1825-M.
This vehicle's factory manual
1990 Geo Metro: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Other specs:All specs
What You'll Need
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Frequently Asked Questions
- What type of coolant does a 1990 Geo Metro take?
- The 1990 Geo Metro requires 50/50 mixture of Ethylene Glycol Base Antifreeze and water. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Base, 2D Hatchback, Automatic configuration.
- How much coolant does a 1990 Geo Metro hold?
- The 1990 Geo Metro cooling system capacity is 4.10 QTS. (3.88 L).
- Can I use universal coolant in my 1990 Geo Metro?
- It is strongly recommended to use coolant that meets the 50/50 mixture of Ethylene Glycol Base Antifreeze and water specification. Universal coolants may not provide the correct corrosion protection for your engine's materials.
- What happens if I use the wrong coolant in my 1990 Geo Metro?
- Using coolant that does not meet the OEM specification can cause corrosion, gasket damage, and overheating. Always verify the correct coolant type before topping off or flushing the system.